Churchill County is a county in the western U.S. state of Nevada. As of the 2020 census, the population was 25,516. Its county seat is Fallon. Named for Mexican–American War hero brevet Brigadier General Sylvester Churchill, the county was formed in 1861. Churchill County comprises the Fallon, NV Micropolitan Statistical Area. It is in northwestern Nevada. Churchill County is noteworthy in that it owns and operates the local telephone carrier, Churchill County Communications.